The BGS Lexicon of Named Rock Units — Result Details
Hollybush Limestone
| Computer Code: | HHLS | Preferred Map Code: | notEntered |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Brigantian Substage (CX) — Brigantian Substage (CX) | ||
| Lithological Description: | A pale to dark grey, argillaceous, shelly, bioclastic, limestone, interpreted to be of marine origin, generally with a massive lower portion and a thinly bedded upper sequence. | ||
| Definition of Lower Boundary: | Generally changes from a thin coal or seatrocks overlain by a marine mudstone of the Craigenglen Marine Band belonging to the Lawmuir Formation. | ||
| Definition of Upper Boundary: | Generally succeeded by a marine mudstone of the Craigenglen Marine Band, belonging to Lawmuir Formation, which is overlain by sandy non-marine strata. | ||
| Thickness: | Up to 5.0 m thick in the Paisley and Glasgow districts, elsewhere represented by the Craigenglen Beds. | ||
| Geographical Limits: | The Paisley and Glasgow area of the Midland Valley of Scotland. | ||
| Parent Unit: | Lawmuir Formation (LWM) | ||
| Previous Name(s): | Productus Giganteus Limestone
(PGLS)
Craigburn Limestone [Obsolete Name And Code: Use HHLS] (CNLS) Productus Giganteus Limestone (PGLS) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Reference Section | The Lawmuir Borehole, BGS reg. no NS57SW/162, measured as 4.14 m thickness of limestone and interbedded calcareous mudstone, from a base depth of 40.78m. Hollybush is in the Barrhead area SW of Glasgow. | ||
| Reference(s): | |||
| Forsyth, I H, Hall, I H S and McMillan, A A. 1996. Geology of the Airdrie district. Memoir of the British Geological Survey, Sheet 31W (Scotland). | |||
| Hall, I H S, Browne, M A E and Forsyth, I H. 1998. Geology of the Glasgow district. Memoir of the British Geological Survey, Sheet 30E (Scotland). | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| S023 S030 S030 | |||